Amides Do Not Always Work: Observation of Guest Binding in an Amide-Functionalized Porous Metal-Organic Framework

被引：46

作者：

Benson, Oguarabau ^{[1
]}

da Silva, Ivan ^{[2
]}

Argent, Stephen P. ^{[1
]}

Cabot, Rafel ^{[1
]}

Savage, Mathew ^{[3
]}

Godfrey, Harry G. W. ^{[3
]}

Yang, Yong ^{[3
]}

Parker, Stewart F. ^{[2
]}

Manuel, Pascal ^{[2
]}

Lennox, Matthew J. ^{[1
]}

Mitra, Tamoghna ^{[1
,4
]}

Easun, Timothy L. ^{[1
,5
]}

Lewis, William ^{[1
]}

Blake, Alexander J. ^{[1
]}

Besley, Elena ^{[1
]}

Yang, Sihai ^{[3
]}

Schroder, Martin ^{[3
]}

机构：

[1] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England

[2] STFC Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[3] Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England

[4] Cardiff Univ, Sch Chem, Cardiff CF10 3XQ, S Glam, Wales

[5] Univ Liverpool, Dept Chem, Liverpool L69 3XQ, Merseyside, England

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2016年 / 138卷 / 45期

基金：

英国工程与自然科学研究理事会;

关键词：

SELECTIVE CO2 CAPTURE; COORDINATION POLYMERS; HIGH-CAPACITY; ADSORPTION; SITES; SEPARATION; STORAGE; LIGAND; CU(II);

D O I：

10.1021/jacs.6b08059

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

An amide-functionalized metal organic framework (MOF) material, MFM-136, shows a high CO2 uptake of 12.6 mmol g(-1) at 20 bar and 298 K. MFM-136 is the first example of an acylamide pyrimidyl isophthalate MOF without open metal sites and, thus, provides a unique platform to study guest binding, particularly the role of free amides. Neutron diffraction reveals that, surprisingly, there is no direct binding between the adsorbed CO2/CH4 molecules and the pendant amide group in the pore. This observation has been confirmed unambiguously by inelastic neutron spectroscopy. This suggests that introduction of functional groups solely may not necessarily induce specific guest host binding in porous materials, but it is a combination of pore size, geometry, and functional group that leads to enhanced gas adsorption properties.

引用

页码：14828 / 14831

页数：4

共 43 条

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